Physics
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...59..188e&link_type=abstract
Icarus (ISSN 0019-1035), vol. 59, Aug. 1984, p. 188-198.
Physics
9
Reflectance, Saturn Rings, Spokes, Imagery, Orbits, Plasma Clouds, Velocity, Voyager 2 Spacecraft, Saturn, Rings, Spokes, Dynamics, Reflectance, Optical Properties, Data, Orbits, Velocity, Voyager 2, Observations, Features, Anomalies, Models, Motion, Acceleration, Celestial Mechanics, Phases, Source, Photographs, B Ring, Mass, Formation, Clouds, Charged Particles, Density, Diagrams, Concentration
Scientific paper
Orbital velocities and relative reflectances of a preliminary sample of 15 Saturnian spokes recorded in the Voyager 2 low-resolution ring movie have been examined. While 13 spokes exhibit the expected Keplerian velocities, 2 anomalous spokes deviate from this motion. For approximately 2 hr after their formation these spokes exhibit corotational motion and, only then, accelerate to Keplerian speeds. The atypical dynamics of these 2 spokes suggest that they are generated by plasma clouds of unusually high charge density, while the contrast of these features appears to depend more on ring particulate concentration than on plasma cloud density.
Eplee Robert E.
Smith Benjamin A.
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